Fan.



W. SPARKS.

FAN.

Awugnluu FILED SEPT-21.1916.

1356,9419, Patented Feb.19,1918.

.. 7 5 Q I I a MM UNITED STATES PATENT OFFICE.

WILLIAM SPARKS, QF JACKSON, MICHIGAN, ASSIGNOR TO THE SPABKS-WITHINGTON COMPANY, OF CLEVELAND,-OHIO, A CORPORATION OF OHIO.

FAN.

Specification of Letters Patent. Patented Feb 19, 1918;

Application filed September 27, 1916. Serial N 0. 122,384.

To all whom it may concern:

Be it known that I, WILLIAM.SPARKS, a citizen of the United States of America, and resident of Jackson, in the county of J ack son, in the State of -Michigan, have invented new and useful Improvements in Fans, of which the following, taken in connection with the accompanying drawingsQis a full, clear, and exact description.

This invention relates to certain improve ments in fans and more particularly to pulley-driven radiator fans in which the entire structure constitutes a unitary article of manufacture and sale.

The object of the invention is to increase the efiiciency of such apparatus in its adaptation to various uses, such a." the cooling of automobile or other engines eitherdirectly or by water circulation through radiators or the like and at the same time to produce a unitary structure made compactly and preferably of comparatively thin sheet metal and assembled in such a manner as to be at once light, strong, durable and capable of being manufactured at a reasonable cost.

Other objects and advantages relate to the specific details of construction as will more fully appear from the following description taken in connection with the accompanying' drawings in which:

Figure 1 1s a plan view of the fan.

Fig. 2 is a view of the same taken at right angles to Fig. 1.

Fig. 3 is a section on line 3-3, Fig. 1 Fig. 4 isa section on line-l4:, Fig. 1. Fig. 5 is a section on line 5--5, Fig. 4. Fig. 6 is a plan view of a portion of the blank from which the blade is formed.

The invention, as shown, embodies a uni tary structure adapted to be mounted in any suitable manner as the one provided without the addition or sem lage of other elements and comprises a eb 1-.'- formed -with'a series of radiating arms ,,.'-2 and a centrally axially extending flange 3 Each of the radiating arms -2 is adapted to carry a thin blade -4 suitable connection being made in any desirable man-' nor as by rivets -'4'. are integrally united at their inner ends by a continuous web secured to and lying in contact: with the web '-1. The fan'blades and the radiating arms are twisted or deflectedsq as to lie at an angle to the plane of rotation of the fan for the usual purpose.

Each of the fan blades is provided with a I flange -5- projecting radially from the end of the blade and extending somewhat laterally from its connection with the blade. These flanges -5 are bent about the end portion of the blade so as to lie at substantially right angles to the longitudinal plane of the blade and are secured to the inner side of a circular rim -6- constituting a connection for the ends of all theblades.

The rim -6 may'be formed of a circular strip of thin sheet metal of any suitable width, as shown, of a width somewhat less than the lateral extension-0f the deflected blades so as to cover only.a.portion of the same and the flanges 5 are so formed as to extend circumferentially of the rim 6 in a plane distinct from the plane of the deflected blades and preferably the ;rim has its opposite circumferential edges inturned somewhat constituting a channel strip, or rim, and the flanges 5- are of a width adapted to fit between the will not project materially beyond the a'dja-.

cent ed e of the rim 6 while the edge --8-- o the'blade will project some distance to the opposite side of the rim. This construction is further accomplished by rendering the blades somewhat concave so that the edge 7- is curved inwardly somewhat beneath the adjacent edge of the rim while the edge -8 by reason of the concavit is turned outwardly from the opposite edge of the rim. This construction is particularly advantageous for use in such association as automobile radiators and the like by reason of the tact that the rim will prevent the blades from coming in contact with the radiator should the 'fan become loosened with respect to its supporting means. The flange 3'- formed upon the web -1 is of a diameter adapted to receive a.

erably provided with a, radially and out wardly projecting flange -11- and a relatively ,small internal shoulder -12- adjacent the radially outwardly extending flange. Suitable bearings 13 and -1&- are fittedlwithin the hub9, and these may be any suitableroller, ball or other bearings, as desired. The bearing -13- being positioned within the hub --9 ata point adjacent radiation of the web 1- and the bearing -1-1-- at a point adjacent the radiation of the flange -1 and preterably a washer 15 is fitted against the shoulder 12- to hold the bearing -l4- in proper position. The shaft 16- mounted in the bearings 13- and 1tand projects some distance from the bearing l4- for receiving any suitable supporting member, suchv as that indicated at -l7- which member may be retained upon the shaft in any suitable manner as by nut A pair of sheet metal ring-shaped pulley sections -19- and --20 are mounted upon the hub 9-, the section -19 be ing provided with an axially extending 1n termediate flange -22 resting upon the outer face of the flange -11- and a radially and inwardly extending portion -23 lying in contact with the inner facepf the flange --11-. The section --20- 1s provided with an intermediate bead E2ll--v resting upon the edge of the flange portion -22? of section l9 and a radially inwardly extending portion,-25- lying in contact with the portion Q3 of section '19. i

.A suitable cap plate -26- is then fitted over the end of the shaft -16 to lie in contact with the outer face of the flange -11 and the-sections -19- and --20--. The flange 11 and capbolt -2Bare rigidly secured together in any suitable way,

as by bolts --27. Preferably the portion of the pulley sections 19- and 20- extending outwardly from the intermediate flange -22 diverge somewhat to facilitate the application and use of belt means. It will be readily understood that the entire structure, including the pulley, rotates freely; about the shaft -16- through the medium of bearings -413- and 1 4-.

Although I have shown and described one specific construction, combination and form of cl ements as perhaps preierable, I do not desire to limit myself to the details of any of the same as various changes may be made Without departing from the spirit of this invention as set forth in the-appended claims.

What I claim is: 1. In a fan, the combination with a Web having a series of radiating arms of a second Web having a series of radiating blades,

means for securing the'arms to the blades with the webs in substantial contact, a laterally extending flange on one web and extending through the other web, a hollow substantially cylindrical hub telescoped within said flange, an antifriction bearing within said hub, and a shaft mounted in said bearing.

2. In a fan, the combination with a web having a series of radiating arms of a second web having a series of radiating blades, means for securing the arms to the blades with the webs insubstantial contact, a laterally extending tubular ilange on one Web, a hollow substantially cylindrical hub telescoped within said flange and secured thereto, and a shaft mounted within the hub.

3. In a fan the combination with a web having a series of radiating arms of a second web having a series of radiating .blades and means for securing the arms to the blades with the webs insubstantial contact and a cup-shaped hub extending through the webs.

l. In a fan the combination with a web having a series of radiating arms of a second web having a series of radiating blades, means for securing the arms to the blades with the webs in substantial contact and an axially extending cylindrical flange on one web and extending through the other web and a hollow cup-shaped hub telescoped within said flange.

5, In a fan the combination. with a web having a series of radiating arms of a sec ond web having a series of radiating blades and means for securing the arms to the blades with the webs in substantial contact,

6. In a fan the combination with a web having a series of radiating arms of a sec ond web having a series of radiating blades, means for securing the arms to the blades with'the webs in substantial contact and an and extending through the other web, a hollow cup-shaped hub upon which said circularflange is mounted, and a radially and,

outwardly extending flange upon said hub and a pulley seated on and secured to said 7. Inafan' the combination with a web having a serles of radiating arms of a secaxially extending circular flange on one web a cup-shaped hub upon which'said Webs are spaced anti-friction bearings within the hub mounted, a radially and outwardl extending flange upon said hub and a pul ey seated on' and secured to said flange,-a pairofand a shaft mounted in said bearings.

8. In a fan the combination with a web having a series-0f radiating arms of a second 'web having a 'series of radiating blades, m'eansfor securing-the arms' to the blades with the Webs in substantial contact, an axi- "ally extending circular flange on one web and extending through the other-web a hollow cup-shaped hub upon which sai circula'r flange is mounted, a radially and outwardly extending flange upon said hub and a pulley seated onand secured to said flange, a pair of 'spaced anti-friction bearings within the hub and a" shaft mounted in said bearings.

9. In a fan the combination with a Web having a series of radiating arms of a seoondWeb having a series of radiating blades and means for securing the arms to the blades with the webs insubstantial contact, a'cupshaped hub upon Which-said webs are mounted, a radiallyand outwardly extendin flange ,upon said hub and a pulley'seaited on and'seoured' to said flange, a'pair of spaced anti-friction bearings within. the hub, one positioned adjacent the radiation of said webs and the other adjacent the radiatioflof said flange'upon the hub and a shaft mounted in said bearings.

10. In. a fan the combination with a web havinga series of radiating arms of a secondwebhaving a series of radiating blades, means for securing the arms to the blades with the Webs in substantial contact, an axiallynextendin'g circular flange 'on one web and----cxt.nding through the other web, a

hollow cup-shaped hub upon which said circular flange is mounted, a radially and outwardly-extending flange upon said hub,

- and a pulley seatedon and secured to said flange, a pair of spaced anti-friction bearings withinthe hub; one positioned adjacent the radiation of said webs and the other adjacent the radiation of said flange upon the hub and a shaft mounted in said bearings.

' 11. In a fan-the combination withn hol-' low hub of fan blades radiating from said hub, a radially and outwardly exten'ding flange stormed upon the hub, an annular pulley' section "having an intermediate flange conforming to the circumference of said radial flange uponjthe hub, a second annular pulley section and means for rigidly securing I the pulley sections to said radial flange;

12. In. a'fan the-oombihationwith a holloss hub of fan blades radiating from said hub,- at radially and outwardly extending conforming tothe circumference of said radial flange upon the hub, a second annular, "pulley section, an anularcap plate across the end of the hub, means for connecting the pulley sections, the radial flange and .the cap plate. anti-friction bearings within the hub and a shaft mounted in said bearings.

'14. In a fan the combination with a Web having a series of radiating arms of blades secured to the arms, a circular rim, the

blades being deflected out of alinemen-twith the plane of rotation of the-rim and flanges on the blades lying in the plane of rotation of the rim when the blades are deflected and Ineansfo-r securing the flanges to the rim.

.15. In a fan the combination with a web of a series of radiating blades carried by the web, a circular rim, the blades being deflected out of alinement with the plane of rotation of the rim and flanges on the blades lying in the plane of rotation of the rim -when the blades are deflected and means for securing the flanges to the rim.

16. Ina fan the combination with a web of'a series of radiating blades carried by the web, a circular rim having its edges-inturned to form a 'channel, the blades being deflected outof alinement with the plane of rotation of the rim flanges on the blades lying in the plane of rotation of the rim when the blades are deflected and positioncd'between the inturned edges of the rim and means for securing the flanges to. the rim.

1.7. 'In'a fan the combination with a series of blades of a web unitin the inner ends bf the blades, a hollow cup-s aped hubsecured to and'within the web, the closed end of the holtlow hub projecting to one side of the we 18. In a fan the combination with a series of blades of a web unitin the inner ends' of the blades, a hollow cup-s aped hub secured to'and Within 'the web, the closed end of the hollow hub projecting to one side of the web, the open end of the hub provided with a radially and outwardly extendin flange Ositioned. upon opposite sides of the we a.

pulley secured to and mounted upon said bearing, and a rim connecting the outer ends of the blades.

20. In a fan, the combination with a Web having a series of radiating arm's of a blade secured to each arm, a cylindrical hub upon which the web is'mountcd, a pulley in connection with said hub, an antifriction hearing within the hub in substantial alincmenj;

with the web, a second antifrietion bearing within the hub in substantial alinement' with the pulley, and a shaft journaled in said antifriction bearings.

21. Ina fan, the combination with a web having a series of radiating arms of a blade secured to each arm, a cylindrical hub upon which the web is mounted, a pulley in connection with said hub, a plurality of spaced' antifriction bearings within the hub, and a rim connecting the outer ends of the blades.

22. In a fan, the combination with a series of blades of a. web uniting the inner,

ends of the blades, a hollow cup-shaped hub extending through the web, the closed end of the hollow hub projecting to one side of the web, an, antifriction hearing within the q'hub in substantial alinement with the web,

and a shaft mounted in said bearing.

23. In- ;a fan, the comblnation with a series of blades of a Web uniting the mner ends of the blades, a hollow cup-shaped hub extending through the web, the closed end of the hollow hub projecting to one side of the web, an antifriction hearing within the hub in substantial alinement with the web, a shaft mounted in said bearing, and a pulley in connection with said hub.

24. In a fan, the combination with a web having a series of radiating arms, of a second web having a series of radiating blades, means for securing the arms to the blades with the webs in substantial contact, a laterally extending tubular flange on one web, a hollow substantially cylindrical hub telescoped within said flange and secured there to, a flange formed upon the hub, and, a pulley in connection with the flange.

25. In a fan, the combination with a series of blades, of a Web uniting the inner ends of the blades, a hollow hub secured to and within the web, a-pulley in connection with said hub, a shaft, anti-friction bearings mounted on the shaft and positioned within. the hub, one of said bearings located adjacent the radiations of'the blades and the other anti-friction bearing located adjacent the pulley, the bearing located against the radiations of the blades being unconnected to the hub and free to move axially therein with the shaft, and means for preventing the movement of the other anti-friction bearing axially of the hub.

In witness whereof I have hereunto set my hand this. 23rd day of Sept, 1916.

LILLIAN WUNDERLICH, HENRY C. MENKE. 

